A federation is a political entity composed of semi-autonomous states or regions that are united under a central authority, with power distribution defined in the constitution. Authors such as Eugene Sue noted its similarity to the Swiss cantons, stressing shared interests as a safeguard for freedom.
John Stuart Mill emphasized the importance of well-defined constitutional boundaries between state and federal powers, while Basil Hammond described the dual system of governance characteristic of federations. From historical examples like the Austrian Empire to contemporary nations such as Germany and Nigeria, federation maintains a balance between independence and cohesion, illustrating both effective administration and ongoing discussions about sovereignty.